Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2005-11-01
2005-11-01
Tan, Vibol (Department: 2819)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S034000, C327S036000, C327S037000, C327S038000, C365S233500
Reexamination Certificate
active
06960951
ABSTRACT:
A circuit for detecting a logic transition is proposed. The circuit includes an input terminal for receiving a logic signal, an output terminal for generating a detection signal, two capacitors, in a steady condition a first one of the capacitors and a second one of the capacitors being alternately at a first voltage and at a second voltage, respectively, and exchanging means for bringing the first capacitor to the second voltage and the second capacitor to the first voltage in response to a switching of the logic signal; the circuit further includes means for maintaining a command node at the first voltage in the steady condition, means for generating a reset pulse through the first capacitor in response to the switching, means for bringing the command node to the second voltage in response to the reset pulse, a generator of regulated current for bringing back the command node to the first voltage through the second capacitor, and logic means having a regulated threshold voltage comprised between the first and the second voltage, the logic means asserting the detection signal when the command node is brought to the second voltage and deasserting the detection signal when the command node reaches the threshold voltage.
REFERENCES:
patent: 5650979 (1997-07-01), Komarek et al.
patent: 5696463 (1997-12-01), Kwon
patent: 5734282 (1998-03-01), Choi et al.
patent: 5774707 (1998-06-01), Bae
patent: 6021089 (2000-02-01), Hwang
Confalonieri Emanuele
Lisi Carlo
Poidomani Carla
Sforzin Marco
Carlson David V.
Jorgenson Lisa K.
Seed IP Law Group PLLC
STMicroelectronics S.r.l.
Tan Vibol
LandOfFree
Circuit for detecting a logic transition with improved... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for detecting a logic transition with improved..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for detecting a logic transition with improved... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3493989